In the link someone say something to the effect of "who is he going to "take up arms" against"
Here is the scenario that I see as likely to play out
Better than 50/50
If you are old enough to remember "the Florida recount" you probably remember, even if it only from how it was depicted in the movie the iconic scene of this mob of Republicans, who you just know all turned into "TEAPartier's and now are ALL "Trumpian"s who stormed into the building and tried to force their way into the room where the election officials, from as I recall Palm Beach County were examining the punch cards, trying to determine how who ever had voted.
Hanging chads and the like
The end result of that is the election officials stopped "counting" which seemed to be the goal and never started counting again and the gap of 537 which may very well have vanished had they never stopped remained.
Fast forward to 2020 and this time it is not punch cards but absentee ballots that are being counted on November 4th and 5th and so on.
Many people believe that because this year it will be Trump voters who will by wide margins vote in person and Biden voters who will by an even wider margin vote via absentee , just the opposite of past cycles and the result of that the next morning Trump will be ahead and ahead in enough states that if no further counting takes place he will again achiever an electoral college win at which time Trump will be tweeting non stop about how Democrats are trying to "steal the election" by counting those "mail in votes" .
Without Trump ever out and out telling them even bigger mobs of the guys such as in the OP will descend on where the absentee ballots are being counted in states like WI, MI PA NC AZ FL GA, anyplace it is close and unlike 2000 they will be, as we saw at the Statehouse in Michigan be packing AR-15's and like in Michigan LE will not stop them and this time they will force their way into that room and they will then steal the absentee ballots and take them outside and set them on fire, burning them up so they can not ever be counted, telling themselves that if worse case scenario happens and they they get arrested AFTER THE FACT that Daddy Don or Uncle Bill will have their backs and ensure they never get prosecuted or just out and out pardon them.